Acts 2:42

and they stedfastly continued in the teaching of the apostles, and in the fellowship, in the breaking of the bread, and in the prayers.

1 Corinthians 15:33-34

Do not deceive yourselves. Evil companions ruin good morals.

2 Corinthians 6:14-18

Be not unequally yoked with unbelievers; for what fellowship has righteousness with lawlessness? what communion has light with darkness?

Hebrews 10:24

and let us consider one another, to provoke unto love and good works;

Revelation 18:4

And behold I heard another voice from heaven saying. "Come out of her, that you have no fellowship with her sins, And that you receive not her plagues.

Treasury of Scripture Knowledge

Summary

He that walketh with wise men shall be wise: but a companion of fools shall be destroyed.

General references

Bible References

That

Acts 2:42
and they stedfastly continued in the teaching of the apostles, and in the fellowship, in the breaking of the bread, and in the prayers.
Hebrews 10:24
and let us consider one another, to provoke unto love and good works;

General references

Mark 4:10
When he was alone his followers and the Twelve began asking about the parables.
Ephesians 5:7
therefore do not become sharers with them.